import os, time
+import libxml2
+
+from sfatables.globals import sfatables_config
+from sfatables.pretty import Pretty
from sfatables.command import Command
class List(Command):
- options = [('-L','--list')]
- help = 'List a chain'
- key='list_rule'
- matches = False
- targets = False
-
+
def __init__(self):
+ self.options = [('-L','--list')]
+ self.help = 'List a chain'
+ self.key='list_rule'
+ self.matches = False
+ self.targets = False
+
return
- def call(self):
- # Override this function
- return True
+ def get_info(self, type, xmlextension_path):
+ xmldoc = libxml2.parseFile(xmlextension_path)
+ p = xmldoc.xpathNewContext()
+
+ ext_name_node = p.xpathEval("/%s/@name"%type)
+ ext_name = ext_name_node[0].content
+
+ name_nodes = p.xpathEval("//rule/argument[value!='']/name")
+ value_nodes = p.xpathEval("//rule/argument[value!='']/value")
+ element_nodes = p.xpathEval("//argument[value!='']/parent::rule/@element")
+
+ if (len(element_nodes)>1):
+ raise Exception("Invalid rule %s contains multiple elements."%xmlextension_path)
+
+ element = []
+ argument_str = ""
+ if element_nodes:
+ element = element_nodes[0].content
+
+ names = [n.content for n in name_nodes]
+ values = [v.content for v in value_nodes]
+
+ name_values = zip(names,values)
+ name_value_pairs = map(lambda (n,v):n+'='+v, name_values)
+
+ argument_str = ",".join(name_value_pairs)
+
+ p.xpathFreeContext()
+ xmldoc.freeDoc()
+
+ return {'name':ext_name, 'arguments':argument_str, 'element':element}
+
+ def get_rule_list(self, chain_dir_path):
+ broken_semantics = os.walk(chain_dir_path)
+ rule_numbers = {}
+
+ for (root, dirs, files) in broken_semantics:
+ for file in files:
+ if (file.startswith('sfatables')):
+ (magic,number,type) = file.split('-')
+ rule_numbers[int(number)]=1
+
+ rule_list = rule_numbers.keys()
+ rule_list.sort()
+ return rule_list
+
+ def call(self, command_options, match_options, target_options):
+ if (len(command_options.args) < 1):
+ print "Please specify the name of the chain you would like to list, e.g. sfatables -L INCOMING."
+ return
+
+ chain = command_options.args[0]
+ chain_dir = os.path.join(sfatables_config, chain)
+
+ rule_list = self.get_rule_list(chain_dir)
+
+ pretty = Pretty(['Rule','Match','Arguments','Target','Element','Arguments'])
+
+ for number in rule_list:
+ match_file = "sfatables-%d-%s"%(number,'match')
+ target_file = "sfatables-%d-%s"%(number,'target')
+
+ match_path = sfatables_config + '/' + chain + '/' + match_file
+ target_path = sfatables_config + '/' + chain + '/' + target_file
+
+ match_info = self.get_info ('match',match_path)
+ target_info = self.get_info ('target',target_path)
+
+ pretty.push_row(["%d"%number,
+ match_info['name'],
+ match_info['arguments'],
+ target_info['name'],
+ target_info['element'],
+ target_info['arguments']])
+
+ pretty.pprint()
+
+
+
+
+
+
- def __call__(self, option, opt_str, value, parser, *args, **kwargs):
- return self.call(option)